Eavesdropping the Environment

• Tools

• • Grandstream GXV-3000 SIP Phone exploit:
  • • http://voipsa.org/pipermail/voipsec_voipsa.org/2007-August/002424.html
  • Other undisclosed devices have the same issue

• Mitigation

• • Affected vendors need to patch their protocol stacks
  • Devices with available patches need to be updated